Patents
Patents for H01Q 7 - Loop aerials with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop (7,833)
05/1996
05/21/1996US5519321 Circularly polarizing local antenna arrangement with a movable antenna
05/09/1996DE19546257A1 Magnetic directional antenna
05/08/1996EP0711000A2 Hybrid antenna and broadband hybrid antenna array
04/1996
04/25/1996DE19505245C1 Identity chip card
04/18/1996DE4436975A1 Electronic object monitoring installation
04/16/1996US5508710 Conformal multifunction shared-aperture antenna
04/04/1996WO1996009941A1 Concealed mobile communications system
04/03/1996EP0704928A2 RF transponder system with parallel resonant interrogation and series resonant response
04/03/1996EP0704816A2 RF transponder with resonant crossover antenna coil
03/1996
03/27/1996EP0703637A1 Antenna for an electronic surveillance system
03/20/1996CN1118880A Radio frequency identification tag
03/14/1996WO1996008054A1 Antenna coil
03/14/1996WO1996007938A1 Radio frequency identification tag
03/14/1996DE4431446A1 Generator of local interrogation fields for transponder
03/13/1996EP0701297A1 Multipolarized omnidirectional transceiver antenna system
03/10/1996CA2153440A1 Radio frequency identification tag
03/07/1996DE4431603A1 Antennenspule Antenna coil
02/1996
02/27/1996US5495259 Compact parametric antenna
02/21/1996EP0697140A1 Small radio watch
02/20/1996US5493312 Reduced current antenna circuit
02/15/1996DE4427382A1 Receiver circuit for time sign signals
02/14/1996CN2220124Y Wide frequency band omnidirectional antenna for TV set
02/08/1996DE4427041A1 Antenna device for cordless or radio telephone
02/01/1996WO1996002954A1 Attenuator
01/1996
01/24/1996EP0693733A1 Short-distance communication antennas and methods of manufacture and use of same
01/16/1996US5485166 Communication transceiver
01/16/1996US5485165 Broadband high efficiency full wave open coaxial stub loop antenna
01/09/1996US5483688 Adaptive automatic antenna tuning method and apparatus
12/1995
12/27/1995EP0689301A1 System of omnidirectional antennae having angular and polarisation diversity
12/19/1995US5476394 Antenna connector
12/13/1995EP0672308A4 Tunable microwave devices incorporating high temperature superconducting and ferroelectric films.
12/05/1995CA2046165C Method and apparatus for shaping a magnetic field
11/1995
11/28/1995US5471142 Circularly polarized local antenna arrangement for a nuclear magnetic resonance tomography apparatus and method for operating same
11/23/1995WO1995031862A1 An arrangement for preventing disturbances in electronic alarm systems
11/21/1995US5469180 Method and apparatus for tuning a loop antenna
11/15/1995CN1111829A Magnetic core elemment for antenna, thin-film antena, and card equipped with thin-film antenna
11/09/1995WO1995030253A1 Antenna device and mobile telephone
11/09/1995CA2189239A1 Antenna device and mobile telephone
10/1995
10/26/1995WO1995028748A1 Antenna arrangement
10/18/1995EP0677887A1 Built-in chip transponder with antenna circuit
10/18/1995EP0677210A1 Transmit and receive antenna having angled crossover elements
10/17/1995US5459451 Electronic article surveillance system with enhanced geometric arrangement
10/12/1995DE19513607A1 Magnetic core element used in thin film antenna for travel-cards
09/1995
09/27/1995EP0674354A2 Wireless access control system using a proximity member and antenna equipment therefor
09/20/1995EP0672308A1 Tunable microwave devices incorporating high temperature superconducting and ferroelectric films
09/19/1995US5451965 Flexible antenna for a personal communications device
09/14/1995DE4422069C1 HF switching diode control circuit
09/14/1995DE4407116A1 Ferrit-Langwellenantenne Ferrite-long wave antenna
09/13/1995EP0671778A2 Antenna coil assembly for an automobile transponder key system
09/10/1995CA2123062A1 Antenna coil assembly for an automobile transponder key system
09/08/1995WO1995024060A1 Small radio watch
08/1995
08/31/1995DE4343932A1 Local antenna for magnetic resonance device
08/23/1995EP0668626A1 Antenna pedestal
08/19/1995CA2136390A1 Antenna pedestal
08/15/1995US5442369 Toroidal antenna
08/15/1995US5442368 Automobile loop antenna
08/08/1995US5440296 Coil assembly for electronic article surveillance system
08/02/1995EP0665519A1 Antenna device
07/1995
07/18/1995CA1336341C Powering and communication apparatus and method
07/11/1995US5432518 Closed slot antenna having outer and inner magnetic loops
06/1995
06/27/1995US5428363 Antenna system for use in an automatic vehicular identification system
06/21/1995EP0393103B1 Antenna structure for providing a uniform field
06/20/1995US5426439 Horizontal printed circuit loop antenna with balun, fed with collinear vertical dipole antenna, providing omnidirectional dual polarization
06/13/1995US5424527 Signal receiving coil and non-contact type IC card using the same
06/06/1995US5422650 Loop antenna with series resonant circuit and parallel reactance providing dual resonant frequencies
06/01/1995WO1995014938A1 Location apparatus and method
05/1995
05/31/1995EP0578701A4 Article sorting system.
05/30/1995US5420579 Antenna and driving circuit for transmitting and receiving signals to and from a passive transponder
04/1995
04/26/1995EP0650216A1 Antenna circuit
04/26/1995EP0650074A1 Highly accurate RF-ID positioning system
04/18/1995US5408699 Portable radio equipment having a display
04/18/1995US5408243 Method for producing a flat flexible antenna
04/12/1995EP0454694B1 Reactance buffered loop antenna
04/05/1995EP0646984A1 Electromagnetic detection system provided with an antenna element having one winding
03/1995
03/30/1995DE4332798A1 Circuit arrangement for a tunable resonant circuit
03/29/1995EP0645840A1 Antenna configuration of an electromagnetic detection system and an electromagnetic detection system comprising such antenna configuration
03/29/1995CN2193596Y Annular T.V receiving antenna
03/28/1995US5402134 Flat plate antenna module
03/15/1995EP0407532B1 Antenna structure for an electronic article surveillance system
03/14/1995US5396698 Manufacture of a flexible antenna
03/09/1995DE4327917A1 Magnetic antenna
01/1995
01/31/1995CA1334215C Concentrator
01/25/1995EP0635165A1 Coil construction
01/18/1995EP0634807A1 Antenna device
12/1994
12/28/1994EP0409867B1 Balanced low profile hybrid antenna
12/21/1994EP0630068A1 Radar system and components therefor for transmitting an electromagnetic signal underwater
12/14/1994EP0629019A1 Antenna device for electronic systems for protecting objects against theft
12/13/1994US5373303 Built-in chip transponder with antenna coil
12/13/1994US5373301 Transmit and receive antenna having angled crossover elements
12/08/1994WO1994028594A1 An efficient electrically small loop antenna with a planar base element
12/08/1994DE4318134A1 Circularly polarising local antenna
12/07/1994CN1026934C Orthogonal loop aerial
12/06/1994US5371509 Planar microwave transceiver employing shared-ground-plane antenna
11/1994
11/09/1994EP0500548B1 Adaptable antenna
11/08/1994US5361488 Manufacturing method for antenna module
11/02/1994EP0622766A1 Antenna lattice for electronic article surveillance system
11/02/1994CN2181758Y Loop balcony sense antenna
10/1994
10/05/1994EP0386134B1 Antenna system for magnetic and resonant circuit detection
09/1994
09/21/1994EP0588944A4 An improved miniature transponder device
09/21/1994CN2177998Y Omnidirectional receiving aerial for TV set
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